後臺項目框架搭建（一）-----springboot+jpa+swagger+log4j2

新建項目

POM文件

  <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>


        <!-- 添加日誌支持 -->
        <dependency> <!-- 引入log4j2依賴 -->
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-log4j2</artifactId>
        </dependency>

        <!--swagger-->
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>2.2.2</version>
        </dependency>

        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>2.2.2</version>
        </dependency>

        <!-- json數據 -->
        <dependency>
            <groupId>net.sf.json-lib</groupId>
            <artifactId>json-lib</artifactId>
            <version>2.4</version>
            <classifier>jdk15</classifier>
        </dependency>

    </dependencies>

swaggerconfig.clsaa

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

@Configuration
@EnableSwagger2// 啓用 Swagger
public class SwaggerConfig {

    @Bean
    public Docket createRestApi() {
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())
                .select()
                .apis(RequestHandlerSelectors.basePackage("com.zhw.backend_mall.controller"))//包名
                .paths(PathSelectors.any())
                .build();
    }

    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title("商城後臺")
                .description("使用springboot+jpa")
                .termsOfServiceUrl("/swagger")
                .contact("得已")
                .version("1.0")
                .build();
    }

}

application.properties文件配置

#MySQL
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/house?useUnicode=true&characterEncoding=UTF8&zeroDateTimeBehavior=convertToNull&serverTimezone=Asia/Shanghai
spring.datasource.username=root
spring.datasource.password=123456

#Spring Data JPA
spring.jpa.database=MYSQL
spring.jpa.show-sql=true
spring.jpa.hibernate.ddl-auto=update
spring.jackson.serialization.indent_output=true

log4j2.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<!--日誌級別以及優先級排序: OFF > FATAL > ERROR > WARN > INFO > DEBUG > TRACE > ALL -->
<!--Configuration後面的status，這個用於設置log4j2自身內部的信息輸出，可以不設置，當設置成trace時，你會看到log4j2內部各種詳細輸出-->
<!--monitorInterval：Log4j能夠自動檢測修改配置 文件和重新配置本身，設置間隔秒數-->
<configuration status="WARN" monitorInterval="30">
    <Properties>
        <!-- 配置日誌文件輸出目錄 -->
        <!--  <Property name="LOG_HOME">${sys:catalina.home}/logs/bootdemo/</Property>-->
        <Property name="LOG_HOME">I:\Logs</Property>
    </Properties>

    <!--先定義所有的appender-->
    <appenders>
        <!--這個輸出控制檯的配置-->
        <console name="Console" target="SYSTEM_OUT">
            <!--輸出日誌的格式-->
            <PatternLayout pattern="[%d{HH:mm:ss.SSS} %-5level] [%class{36} %L %M] - %msg%xEx%n"/>
        </console>

        <!--文件會打印出所有信息，這個log每次運行程序會自動清空，由append屬性決定，這個也挺有用的，適合臨時測試用-->
        <File name="log" fileName="${LOG_HOME}/test.log" append="false">
            <PatternLayout pattern="[%d{HH:mm:ss.SSS} %-5level] [%class{36} %L %M] - %msg%xEx%n"/>
        </File>

        <!-- 這個會打印出所有的info及以下級別的信息，每次大小超過size，則這size大小的日誌會自動存入按年份-月份建立的文件夾下面並進行壓縮，作爲存檔-->
        <RollingFile name="RollingFileInfo" fileName="${LOG_HOME}/info.log"
                     filePattern="${LOG_HOME}/${date:yyyy-MM}/info-%d{yyyy-MM-dd}-%i.log">
            <!--控制檯只輸出level及以上級別的信息（onMatch），其他的直接拒絕（onMismatch）-->
            <ThresholdFilter level="info" onMatch="ACCEPT" onMismatch="DENY"/>
            <PatternLayout pattern="%d{HH:mm:ss.SSS} %-5level %class{36} %L %M - %msg%xEx%n"/>
            <Policies>
                <TimeBasedTriggeringPolicy/>
                <SizeBasedTriggeringPolicy size="1 MB"/>
            </Policies>
        </RollingFile>

        <!-- 這個會打印出所有的warn及以下級別的信息-->
        <RollingFile name="RollingFileWarn" fileName="${LOG_HOME}/warn.log"
                     filePattern="${LOG_HOME}/${date:yyyy-MM}/warn-%d{yyyy-MM-dd}-%i.log">
            <ThresholdFilter level="warn" onMatch="ACCEPT" onMismatch="DENY"/>
            <PatternLayout pattern="%d{HH:mm:ss.SSS} %-5level %class{36} %L %M - %msg%xEx%n"/>
            <Policies>
                <TimeBasedTriggeringPolicy interval="1" modulate="true"/><SizeBasedTriggeringPolicy/>
            </Policies>
            <!-- DefaultRolloverStrategy屬性如不設置，則默認爲最多同一文件夾下7個文件，這裏設置了20 -->
            <DefaultRolloverStrategy max="20"/>
        </RollingFile>

        <!-- 這個會打印出所有的error及以下級別的信息-->
        <RollingFile name="RollingFileError" fileName="${LOG_HOME}/error.log"
                     filePattern="${LOG_HOME}/${date:yyyy-MM}/error-%d{yyyy-MM-dd}-%i.log">
            <ThresholdFilter level="error" onMatch="ACCEPT" onMismatch="DENY"/>
            <PatternLayout pattern="%d{HH:mm:ss.SSS} %-5level %class{36} %L %M - %msg%xEx%n"/>
            <Policies>
                <TimeBasedTriggeringPolicy/>
                <SizeBasedTriggeringPolicy size="1 MB"/>
            </Policies>
        </RollingFile>
    </appenders>

    <!--然後定義logger，只有定義了logger並引入的appender，appender纔會生效-->
    <loggers>
        <!--過濾掉spring和mybatis的一些無用的DEBUG信息-->
        <logger name="org.springframework" level="INFO"></logger>
        <logger name="org.mybatis" level="INFO"></logger>
        <root level="all">
            <appender-ref ref="Console"/>
            <appender-ref ref="log"/>
            <appender-ref ref="RollingFileInfo"/>
            <appender-ref ref="RollingFileWarn"/>
            <appender-ref ref="RollingFileError"/>
        </root>
    </loggers>

</configuration>